Can-capping machine.



PATENTED- MAY 10, 1904.

0. B. MQDONALD.

CAN GAPPING MACHINE.

APPLICATION FILED JULY 3, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

PA'FLTIITEPD MAY 10, 1904.

0. B. MQDO'NALD. CAN GAPPING MACHINE.

APPLICATION FILED JULY 3, 1903.

2 sums-sum 2.

H0 MODEL.

@ Will 1 ins co worm "no" wxswmovou. n c.

UNITED STATES Patented May 10, 1904f PATENT OFFICE.

CAN-CAPPING MACHINE.

SPECIFICATIONforming part of Letters Patent N0. 759,300, dated. May 10, 1904.

Application filed July 3, 1903. Serial No. 164,163. (No model.)

Improvements in (Jan-Capping Machines, of

which the following is a specification.

My invention 18 concerned witl'rmachinery :for capping cans, and is designedto produce a machine by which cans and similar articles having their caps or closures loosely placed thereon Wlll have them automatically forced home exactly to whatever position may be desired.

To illustrate my invention, I annex hereto two sheets of drawings, in which the same reference characters are used to designate identical parts in all the figures, of which- Figure 1 is a side elevation of a machine embodying my invention. Fig. 2 is a top plan view of the same. Fig. 3 is a central longitudinal section of one end thereof, and Fig. 4 is a sectional view on the line A A of Fig. 3. p

In carrying out my invention in its preferred form I employ a track or way over which the endless belt or carrier at travels. This track is conveniently constructed of a pair of angleiron strips 7), supported by the legs 0, secured thereto and spaced apartby the cross-pieces (Z. Mounted in suitable bearings c at one end of the frame thus formed is a shaft f, and in bearings g at the other end, adjustably secured in the slotted brackets ii, is a shaft 71, said shafts having the belt or carrier wheels 7' and b, respectively, secured or journaled of the block 3) and the standard (1 I place the helically-coiled expanding springs r, and in the top of the standard 9 I mount the setscrcws s, by which the upward movement of the block p is limited, the expansion of the spring 0 serving to hold the rollers 0 yieldingl y in the uppermost position possible. A crossed belt or chain 6 connects a wheel "a on the shaft f and a wheel a on the shaft of one of the rollers 0. The diameters of the wheels or pulleys 7' and o and "a and 'v are proportioned so that the lineal speed of the belt a is the same as the peripheral velocity of the roller 0, and where a plurality of rollers o are employed they are adjusted, as seen in Fig. 3, at gradually-decreasing distances from the belt a as you approach the delivery end and are provided with the sprocket-wheels w, connected by the sprocket-chain a, by which they are all driven in unison.

The operation of my invention will be apparent, and it will be seen that the cans placed on the receiving end of the belt a with their caps loosely in position will be carried beneath the rollers 0 and have their caps forced in to the exact extent desired and that without any possibility of the can being upset or otherwise misplaced. It will also be observed that its capacity is only limited by the size and speed of the belt a.

While 1 have shown and described my invention as embodied in the form which I at present consider best adapted to carry outits purpose, it will be understood that it is capable of some modifications and that I do not desire to be limited in the interpretation of the following claims except as may be necessitated by the state of the prior art.

What I claim as new, and desire to secure by Letters Patent of the United States, is

1. In amachine to force caps into connection with the heads of cans to seal them by friction, the combination of a carrier moving only in one direction, forcing means extending transversely over the carrier, adjustable means for determining the distance between the forcing means and the carrier, said carrier and forcing means being held unyieldingly against separating movement, substantially as described.

2. In a machine to force caps into connection with the heads of cans to seal them by friction,

the combination of a carrier, a plurality of forcing means extending transversely above the carrier and at different fixed distances therefrom decreasing toward the delivery end of the carrier, each of said forcing means being held unyieldingly against separating movement in respect to the carrier, which latter is held unyieldingly against separating movement in respect to each of the forcing means, substantially as described.

3. In a can-capping machine, the combination with the carrier of a plurality of forcing means extending transversely above the same at different distances therefrom decreasing toward the delivery end thereof, each of said forcing means being adjustable toward and from the carrier with means for holding each unyieldingly against separating movement in respect to the carrier, when adjusted to the desired position and said carrier being held unyieldingly against separating movement, in respect to each of the forcing means, substantially as described.

4. Ina machine to force caps into connection with the heads of cans, to seal them by friction, the combination with a carrier moving only in one direction of a forcing-roller having a plain cylindrical surface, and means for holding said roller and carrier unyieldingly against separating movement in respect to each other upon the passage between them of.

a can, substantially as described.

5. In combination in amachinefor forcing caps into connection with can-heads, a carrier and a plurality of rollers having plain cylindrical surfaces, said rollers being arranged at different fixed distances from the carrier decreasing toward the' delivery end of the carrier, each of said rollers being held unyieldingly against separating movement in respect to the carrier, to maintain their fixed relation thereto when pressing the caps both initially and finally, substantially as described.

6. In a can-capping machine, the combination with the frame having the belt-wheels journaled in the ends thereof and carrying the belt, of the roller journaled in bearings on said frame and extending transversely above said belt, driving-pulleys connected with one of the belt-wheels and the roller, a crossed belt connecting said driving-pulleys, and means for driving said first-mentioned belt; substantially as and for the purpose described.

7. In a can-capping machine, the combination with the frame having the pair of beltwheels journaled in the ends thereof and carrying the belt, of a plurality of rollers journaled in hearings on said frame and extending transversely above said belt at graduallydecreasing distances therefrom toward the delivery end thereof sprocket-wheels on said rollers, a chain connecting said sprocket-wheels, driving-pulleys connected with one of the beltwheels and one of the rollers, a cross-belt connecting said driving-pulleys, and means for driving said first-mentioned belt; substantially as and for the purpose described.

8. In a can-capping machine, the combination with the frame having the carrier mounted to move thereon, of the bearing-standard on said frame on opposite sides of the carrier, the bearing-blocks movable vertically in said standards, expanding springs interposed between the bottoms of the standards and the blocks, set-screws in the tops of the standards engaging the blocks, a roller journaledin said blocks, and means for driving the carrier and the roller so that the side of the roller adjacent to the carrier moves at the same speed and in the same direction as the carrier; substantially as and for the purpose described.

In witness whereof I have hereunto set my hand this 25th day of June, 1903.

CHARLES B. MCDONALD.

Witnesses:

J. H. McELRoY, M. N. CHAMBERLIN. 

